What's the best way to fill or cover a small hole in the concrete on the outside edge of a sunken drain? The drain is on the outside wall of my house and serves the yard area, utility and kitchen waste pipe outlets. The hole is in an awkward spot and triangular in shape: 3 inches along the outside edge of the drain lip, rising to about 1 inch or so up the slope under the end of the utility room waste pipe. The top of the drain is sunk about 5 inches below the yard level. The hole has water in it and I've tried filling it with stones to provide a base for gluing a patch but it never seems to change so I guess there must be a larger cavity under the yard's concrete slab. I've seen no sign of damp or damage to the house wall but I'm concerned a surveyor might pick up on this hole when I come to sell. Any ideas for what materials adhesives I can use?
Thanks to all contributors for your advice.
Are you a tradesperson and able to answer this question?
It sounds like the drain needs to be completely redone, I would bust the old surround up and completely reset it with new concrete. This way it will be fixed permanently and no need for any kind of patching.If someone were to look at the drain and the hole is obvious and accessible the will be no need for expensive surveys common sense as a tradesman should allow you to visually see what needs to happen. The only time you would need a survey is when the problem isn’t that obvious but it sounds to me like you can see where the problem is and it just needs to be reformed and maybe a new gully set in. It’s not a big job by any means.
Answered29 February 2020
25
Anonymous user
as already been said no need for expensive survey any decent trades man would be able to fix it
Answered12 March 2020
2
Anonymous user
You should have a survey of the drain carried out as this may be the cause of the hole in your concrete and depending on if the survey showed damage to the drain this may be rectified without the need of a large excavation. You could then put pea gravel around the remainder of the pipe and just re-concrete the surface. If you went ahead with this option it may then be possible for the drainage company to claim the money for the repairs from you building’s insurance company. If the drainage has sunk then you will need a survey as the drain maybe damage and allowing the water to seep to ground. But I would suggest sending me a photo so that I can see the pipe and hole
